I am working on a L89 module and so far I have been able to receive NMEA sentences successfully. However, I want to set the SBAS service to only GAGAN. I am having a hard time figuring how to do it.
For more context, I am including the schematics below. I am using the UART to receive NMEA sentences.
Do I have to configure the port to send commands? Which commands do I have to use PAIR or PSTM type?
